KR101361926B1 - Furniture hinge with damping device - Google Patents

Abstract

Furniture hinge with damping device which is insertable into the box of the hinge and fixable therein before the box is assembled with the other components of the hinge. In this way the damping device is protected against external actions, such as impact or pressure that can damage or affect the functioning of the device, by the same box made of steel or of another rigid material.

Description

Furniture hinge with braking system {FURNITURE HINGE WITH DAMPING DEVICE}

FIELD OF THE INVENTION The present invention relates to furniture hinges, in particular doors or spring hinges of furniture parts in general for proper movement, having a braking device which acts upon opening and closing of the door.

       Furniture with doors or partitions that pivot around the horizontal or vertical axis to close and open certain areas uses hinges of various types. The various types used today are hinges that support the door in the closed position and are invisible from the outside of the furniture parts when the door is closed.

       This type of hinge is commonly used in the furniture industry today because it has many advantages that determine its widespread use in the market. Some well-known embodiments of hinges have various types of springs that give a pulling force when the hinged door is closed and a pushing force when the door is opened. This opens and closes the door correctly.

       Nevertheless, the braking and braking device of the door actuation caused by the elastic actuation of the spring is also required in this hinge. The purpose of such a device is to prevent the noise caused by the door closing with respect to the body of the furniture part, especially when the door is closed.

       Some hinges of this type known in the art have a braking device, and a rectangular slider moved by a cam engaged with the rocker of the hinge transfers this movement to a disk braked by high viscosity grease. This conventional device is fixed to the outside under the hinge box and the cam of the rocker is coupled to the sulfider passing through a hole provided in the base of the box.

       Unfortunately, such a structure may be subjected to intentional or undesirable external forces, i.e., the impact of the impact or hinges during manufacture or the packaging of the hinges, when assembled into the furniture, by the hinge box being inserted into the opening of the door. Such a shock or pressure may impair or affect the function of the brake or shock absorber.

       Moreover, another disadvantage of this type of device may arise from the presence of the box base between the cam of the rocker and the slider of the device, which limits the possibility of fully exposing the small space to accommodate the shock absorber or its relative components. Limiting the possibility of forming it advantageously.

       Therefore, there is a need to make furniture hinges equipped with braking devices that can overcome the above mentioned drawbacks.

       Advantageously the braking device of the hinge according to the present invention provides the hinge box as such a component part by itself or is assembled together of parts separate from the box and inserted into the box by suitable means to fix or prevent the parts from moving together. do. This modularity makes configuration and final assembly easier.

       The improved efficiency of the hinge is obtained by increasing the frictional surface with the viscous material present in the proper part of the hinge, or by adjusting the influence of the angular velocity of the disk acting as a brake part in contact with at least one circular part, such as viscous material. Lose.

       Finally, another advantage is that a small braking device mounted inside the box is assembled into the thickness of the furniture door to enhance the aesthetic appearance as the door is invisible when opened.

       Although a typical embodiment of a furniture hinge with a braking device is described as a conventional embodiment with reference to the accompanying drawings, more features and advantages of the present invention will become more apparent from the detailed description.

        Figure 1 shows a cross-sectional view of the hinge of the first embodiment of the present invention in a half open position.

        Figure 2 shows a plan view of the part of the hinge of figure 1;

        3 shows a cross-sectional view of the first element of the hinge of FIG.

        4 shows a side view of the second element of the hinge of FIG.

        5 and 6 show cross-sectional views of the other two elements of the hinge of FIG.

        Figure 7 shows a sectional view of the hinge of the second embodiment of the present invention in a half open position.

        8 shows an exploded view of the parts of the hinge of FIG.

        Figure 9 shows a plan view of the hinge of the third embodiment of the present invention.

       Figure 10 shows a plan view of the hinge of the fourth embodiment of the present invention.

       Referring to Figure 1, the hinges are shown generally by reference numeral 50, which hinges can be fixed to a base or plate that can be secured to a base or plate which in turn is secured to the bearing wall of the side panel or other suitable part of the furniture part. Include 1).

       The hinge has two rockers 2 and 3, each first end of which is pivoted on two respective pins 4, 5 in the holes in the side wall of the arm 1. The arm 1 is connected to a box part 6 fixed in a space made in the door or door of the furniture part or in the inner wall of the other suitable pivot part of the furniture part. The two respective second ends of the rockers 2 and 3 are rotatably mounted on two different respective pins 7, 8 having axes parallel to the two first pins 4, 5. Four pins 4, 5, 7, and 8 form a joint quadrangle.

       An elastic component or spring 9 is provided around the articulating pin 5 that connects the rocker 3 to the arm 1. One arm 10 of the resilient component contacts the hinge arm 1 and the other arm 11 works with the rocker 2.

       When the arms 10, 11 of the elastic part 9 are close, the elastic part exerts a force on the rocker 2 up to the position shown in FIG. Beyond this opening angle of the door, approximately 15 ° to 20 °, the elastic part 9 is compressed so that the use of the arm is ignored and the rest of the door's pivot movement is not affected by the elastic force.

       On the other hand, in the closed state, the elastic component 9 gives a return force in the closing direction so that the door closes precisely and automatically to the final angular space in the range of approximately 15 ° to 20 °.

       The bushing 12 can be suitably inserted between the elastic component 9 and the pin 5. Alternatively, the component 9 can be separated from the pin 5 and hung on the hinge arm 1 in a known manner.

       Inside the box part 6, a braking and braking device 13 suitable for reducing the rapid movement occurring in the open / closed state of the door is installed to reduce noise and to make the open / close state comfortable and smooth.

       The braking device 13 has a housing formed as part of the casing or cover 14 and the box part 6. Inside the housing, a slider 18 and at least one braking element contained in a highly viscous material such as lubricating oil are preferably inserted.

       The shape of the casing 14 is such that the second ends of the rockers 2, 3 are fixed to the box part 6 by pins 7, 8, which are respectively pivoted. The pins 7, 8 penetrate the holes 70, 71 of the casing 14 and the corresponding holes 80, 81 of the box part 6.

       The interior of the casing 14 is provided with a box part or with a cam part 16 fixed in a substantially rectangular or square or other shape of a hole or opening 15, in particular at the lower end of the rocker 3. It is pivoted about the pin 8 so as to be integrally refracted together so that the slider is controlled to switch in the first or second direction according to the pivoting direction of the hinge.

       The first preferred embodiment of the hinge according to the invention shown in FIGS. 1 to 6 has a box part or box 6 made of steel drawn out of a standard size or slightly deeper than a conventional box form, and the processing of furniture doors. It is not difficult to insert the box into a closed hole.

       The box 6 has at least one flange 90 which is fixed to the inner wall of the door or to the wing of the furniture part.

       As shown more clearly in Fig. 6, the box 6 has an annular concentric groove 40 and ribs 41 at its base, which are similar to the groove 40 'provided in the lower surface of the brake disc 23. Engages with the ribs 41 'and is filled with viscous grease therebetween. This is advantageous to ensure the device is quietly quiet and the braking force is more effective in an increased range for the frictional surfaces associated with the viscous material.

       The braking disc 23 has a spiral groove 30 on its upper surface, and the lower protrusion 29 of the slider 18 is coupled therein and is transmitted to it by the cam part 16 of the rocker 3. 18 is converted to rotation of the braking disk 23.

       In particular, the projection 29 engages with the at least one spiral groove 30 by engaging with the tooth cross section of the groove.

       As shown in Fig. 1, in the door open state, the switching of the slider lifts the projection 29 coupled into the groove adjacent to the first groove so that the brake disc 23 does not move. The slider 18 is guided by the edge of the opening 15 provided inside the casing 14 so that the slider 18 and the brake disc 23 are embedded between the casing and the box 6.

       On the other hand, in the state where the door is closed, the cam protrusion of the connecting part 16 presses the corresponding protrusion of the slider 18 so that the transformation takes place and the protrusion 29 engages in the groove 30 so that the brake disc 23 ) Rotates and a braking action takes place. All parts of the braking system are submerged in viscous material.

       The protrusion 29 is advantageously provided at the pointed end 42 to allow the hinge braking device to operate correctly even under abnormal conditions, for example, moving at a small angle from the joint position with respect to the furniture part when the door is not fully open. It will close immediately after it is done. In this situation, the slider 18 is in the position shown in FIG. 1 and the projection 29 lies on the wall formed by the spiral groove 30 and is pushed by the side projection of the cam component 16. When the door is closed again, the tip of the cam component 16 lies on the inclined surface of the pointed end 42 and presses the inclined surface to press the wall of the tooth formed by the groove 30 to bring the brake disc 23 to a new normal position. Slow down rotation to get an overall braking effect for the hinge.

       Without this pointed end 42, the cam part 6 connected to the rocker 3 by moving clockwise from the counterclockwise even if the door is closed again from the position shown in FIG. ) Is moved to the left and the projection does not engage with the sawtooth cross-sectional shape formed by the groove 30, so that no braking effect is obtained. This convenience can also be used in the second embodiment of the hinge described below.

       The interior of the hinge casing 14 according to the invention is almost identical to the interior of a standard hinge of a conventional hinge, as shown more clearly in FIG. 2, and in the figure a plan view of a box 6 having a braking device fitted thereto is shown. Shown. The outer surface of the casing 14 is substantially the same as the outer surface of the cylinder, provided that planes parallel to each other are provided corresponding to the holes 70, 71 for receiving the deflection pins 7, 8 of the rockers 2, 3. The planes are arranged along the string of the bottom circle of the cylinder.

       The draw of the box 6 also has a substantially cylindrical side wall, the shape of which corresponds to the outer shape of the casing 14 and each of the holes 80, 81 receiving the pins 7, 8 of the rockers 2, 3. Are aligned with the holes 70, 71 of the casing 14 at the installation position.

       Advantageously, three points of the wall of the box 6 are provided with tabs 20 which are cut and protrude inwards. The tab 20 is adapted to press the corresponding stop face 21 provided at the edge of the casing 14 to support them in a predetermined set position.

       The slider 18 and the braking disk 23 are received inside the lower cylindrical space 22 provided at the bottom of the casing 14, the lower edge of the casing serving as a sealing element for viscous grease.

       According to the hinge of the second embodiment of the invention shown in Figs. 7 and 8, unlike the first embodiment mentioned above, the lower cylindrical part of the casing, which is completely smooth at the base of the box 6 and houses the slider and the braking disk, The space 22 is closed by a flat plate 26 having a concentric groove 40 and ribs 41 or a closing plate of the braking device, with the concentric grooves and ribs corresponding ribs on the lower surface of the brake disc 23. Meshes with 41 'and groove 40'. This flat piece 26 is clamped by suitable circumferential protrusions 24 which are fitted into the mating seats provided in the lower edge of the casing 14 or the part 26 is blocked by the casing 14. For example by ultrasonic welding.

       Thus, the braking device assembled with the casing 14, the slider 18, the braking disk 23 and the flat plate component 26 has a simple and quick operation on the tab 20 and the stop surfaces 21. It can be inserted into the box 6 and fastened. In this case, the box part does not work as a support part during installation of the parts of the braking device. The box 6 with provisional braking device is easy to assemble with the other parts of the hinge in a conventional manner.

       In these two embodiments, the planar portions of the walls of the ribs 41, 41 ′ and the bottom of the grooves 40, 40 ′ may be fabricated by rough finishes to enhance the contact viscosity of viscous materials, such as highly viscous grease. Can be. Advantageously, this embodiment makes the grease more difficult to move in the radial direction, thereby avoiding the use of a gasket between the base of the box part 6 and the casing 14 or between the flat part 26 and the casing.

       According to the hinge of the third embodiment of the present invention, shown schematically in FIG. 9, a space is formed inside the casing 14 between the guide side edge of the slider 18 and the wall of the box 6 parallel to the direction of change of the slider. This space accommodates a rotary shock absorber of the conventional type, which has a cogwheel 25 fixed to a pin 17 perpendicular to the base of the box 6 with the cogwheel being the slider 18. Is made suitable for rotation by the respective rack 45 provided along the side edges. Since the toothed wheel 25 has a protrusion (not shown) which is fixed to the pin, rotates at a suitable barrel and is immersed in a viscous fluid, a braking effect is generated during rotation in the door opening and closing state.

       In the hinge of the fourth embodiment shown schematically in FIG. 10, the space between the guide side edge of the slider 18 and the wall of the box 6 is used to install the cylindrical seat 46 on both sides, and the piston 47 ) Slides axially under the stress of the spring 48. The two pistons 47 have a common rod 49 that is bent in a C-shape. Each cylindrical seat 46 is sealed by a plug 60 having a gasket to receive a buffer fluid such as grease or oil.

       The slider 18 is suitably connected to the C-shaped rod 49 so as to transmit to the rod the translational movement generated by the pivot of the rocker 3 of the hinge in the closed state. In this case, a spring 48, known as a return spring, is provided for the return of the piston and for the return of the slider instead of the special return part provided on the cam connection part 16.

       With the hinge of the present invention, it is possible to choose to enable braking and braking operation in one or all of the doors' open and closed states.

       Optionally, the function of the connecting part 16 can be achieved by a tab of a suitable type made of the same sheet metal from which the rocker 3 is made.

       In various embodiments of the present invention, the hinge of the present invention is a small size braking device that allows effective operation without changing the overall size of the standard hinge.

       The particular production methods mentioned herein are not limited to the content of the present application and include all of the embodiments of the present invention as defined by the claims.

Claims (16)

       A first member fixed to an element of the furniture part,        A second member adapted for relative pivotal movement around the first articulating pin 8 with the box 6 and fixed to the door of the element of the furniture part with the box 6, and        A connecting portion 16 for connecting the first member to a braking device 13 for braking the pivot movement,        Slider 18 is switched by the connecting portion 16,        Further comprising at least one braking element submerged in a viscous material actuated by the slider 18 to generate a braking force,        The slider 18 and the at least one braking element are received between the base of the box 6 and the substantially cylindrical cover 14, which is a braking element, the base of the box 6 is integrally sealed and the cover is connected to the connecting portion ( A hinge, characterized in that it is fixed internally in the box for the connection between the slider 16 and the slider 18 and an opening 15 is provided inward.        The plate 26 is arranged between the base of the box 6 and the cylindrical cover 14 of the braking element, which plate 26 covers the slider 18 and the at least one braking element. Hinge, characterized in that fixed to the lower edge of the cover (14) to accommodate inside the space (22) inside.        The hinge as claimed in claim 1, wherein the resilient fastening means (20, 21) are pivoted to preassemble the cover (14) into the box (6).        4. The resilient fastening means according to claim 3, wherein the resilient fastening means has tabs 20 for pressing the corresponding stop plates 21, which tabs and stop plates are provided on the walls of the box 6 and the cover 14, or vice versa. Hinges characterized in that.        5. The hinge of claim 4, wherein the tabs (20) and stop plates (21) are provided at three corresponding points on the wall of the box and the cover, respectively.        The hinge according to claim 1, wherein the box (6) has at least one fixing flange (90) to be fixed to the door of the furniture part.        The hinge as claimed in claim 1, wherein the connecting part is a cam part.        2. The hinge as claimed in claim 1, wherein the at least one braking element is a substantially flat disk (23) pivoted about an axis perpendicular to the direction of change so as to generate a braking force corresponding to the movement of the hinge.         9. A dynamic means for converting the slider according to claim 8 is provided for converting the changeover of the slider into the axial center rotation of the disc 23, the dynamic means being a series of grooves on the first surface of the disc 23. 30) and a projection (29) fixed to the slider (18) engaging with at least one groove (30) having a shape that causes the disk to rotate in only one switching direction of the slider.        10. The method of claim 9, wherein the grooves 30 are spiral formed and have a sawtooth cross section, the projection 29 on the slider 18 is characterized in that the shape having a cross section of the shape corresponding to the shape of the groove 30. Hinge.        12. The projection 29 on the slider 18 engages one substantially pointed end 42 that presses the sawtooth cross-sectional shape of the spiral groove 30 when the door is in the closed position in the partially open position. Hinge characterized by having.        The corresponding annular concentric grooves 40 'and ribs 41' according to claim 8 are provided on a plate 26 located between the base of the box 6 or between the second surface and the base of the box. Hinge, characterized in that for coupling with the rib 41 and the groove 40, respectively.        The gear wheel according to claim 1, wherein the at least one braking element has a cog wheel 25 disposed laterally on the slider and engaging each rack 45 of the side edges of the slider with the cog wheel corresponding to the changeover of the slider. Hinge, characterized in that rotating about the axis.        2. The piston of claim 1, wherein the at least one braking element has a piston 47 axially slid in the cylindrical seat 46 containing the viscous material and laterally disposed on the slider, the piston 47 having a slider 18. A hinge having a common rod (49) connected to it so that the slider can transmit its diverting movement to the piston (47).        2. The first member according to claim 1, wherein the first member has two elements, the first of which is a fixing arm 1 fixed to the furniture part and the second of which is a first joint pin 8 with the box 6. A first rocker (3) pivoted about the center and pivotable about the second articulation pin (5) with the fixed arm (1), and a first articulation pin (7) separate from the box (6) A hinge, characterized in that a second rocker (2) is pivoted about the center and pivoted about a second articulation pin (4) separate from the stationary arm (1).        16. A box according to claim 15, wherein the box has articulating pins (7, 8) that engages the first holes (70, 71) of the cover (14) and the corresponding second holes (80, 81) of the box (6). 6) hinges, characterized in that fastening means for fastening the cover (14) are provided.

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